【Doctors between Robot and LPS】

\[ \large\mathcal{YiHsin}\;\mathcal{Sam}\;\mathcal{Lu} \]

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1 Density (\(D\))

\[ \Large D(a) = \cfrac{N}{N_{\text{doctors}}},\; a=\{\text{ Robot, LPS }\} \]

# Robot
nrow(Doc_Robot)/length(levels(Doc_Robot$手術醫師))

## [1] 8.214286

# LPS
nrow(Doc_LPS)/length(levels(Doc_LPS$手術醫師))

## [1] 8.528571

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2 Median (\(Med\))

\[ \Large Med(a) = \cfrac{N_{\text{doctors}}(>median)}{N},\; a=\{\text{ Robot, LPS }\} \]

# Robot
nrow(R)/nrow(Doc_Robot)

## [1] 0.05652174

# LPS
nrow(L)/nrow(Doc_LPS)

## [1] 0.03936348

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3 Bar chart